linux-kernel - drivers/platform/x86/socwatch/sw_counter_list.c:88:25: sparse: sparse: incorrect type in argument 2 (different base types)

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Message-ID: <202207270208.inU91EGZ-lkp@intel.com>
Date:   Wed, 27 Jul 2022 02:38:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     Faycal Benmlih <faycal.benmlih@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: drivers/platform/x86/socwatch/sw_counter_list.c:88:25: sparse:
 sparse: incorrect type in argument 2 (different base types)

tree:   https://github.com/mchinth/linux sep_socwatch_linux_5_10
head:   c55df4a2b60fc7c6c4d00fd9f9fb447087833513
commit: 80c46c8183c607e70bcb88e9b04febae6c7775a2 SEP/SOCWATCH Update SoCWatch driver after rebasing to linux v5.6
date:   1 year, 10 months ago
config: x86_64-randconfig-s022 (https://download.01.org/0day-ci/archive/20220727/202207270208.inU91EGZ-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/mchinth/linux/commit/80c46c8183c607e70bcb88e9b04febae6c7775a2
        git remote add mchinth https://github.com/mchinth/linux
        git fetch --no-tags mchinth sep_socwatch_linux_5_10
        git checkout 80c46c8183c607e70bcb88e9b04febae6c7775a2
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

sparse warnings: (new ones prefixed by >>)
>> drivers/platform/x86/socwatch/sw_counter_list.c:88:25: sparse: sparse: incorrect type in argument 2 (different base types) @@     expected unsigned int flags @@     got restricted gfp_t @@
   drivers/platform/x86/socwatch/sw_counter_list.c:88:25: sparse:     expected unsigned int flags
   drivers/platform/x86/socwatch/sw_counter_list.c:88:25: sparse:     got restricted gfp_t

vim +88 drivers/platform/x86/socwatch/sw_counter_list.c

    74	
    75		pw_u64_t i = 0, max_msr_value = 0;//, msr_array_size = 0;
    76		pw_u64_t msr_list_size = sizeof(msr_info_list) / sizeof(msr_info_list[0]);
    77	
    78		// TODO: Probably sort msr_info_list rather than assuming it is sorted.
    79	
    80		// Since 'msr_info_list' is sorted, the last entry should be the highest MSR
    81		// address
    82		max_msr_value = msr_info_list[msr_list_size-1];
    83		pw_pr_debug("max msr value: %llx\n", max_msr_value);
    84	
    85		// TODO: Optimize the memory usage by making msr_search_array a bit vector
    86		msr_search_array_size = max_msr_value + 1;
    87		msr_search_array = sw_kmalloc(msr_search_array_size * sizeof(pw_u8_t),
  > 88				GFP_KERNEL);
    89	
    90		if (msr_search_array == NULL) {
    91			return -PW_ERROR;
    92		}
    93	
    94		memset(msr_search_array, 0, msr_search_array_size);
    95	
    96		for (i = 0; i < msr_list_size; ++i) {
    97			msr_search_array[msr_info_list[i]] = 1;
    98		}
    99	
   100		return PW_SUCCESS;
   101	}
   102	

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